Is It Blight?

[rustylady]

Doesn't look like blight to me

[Tomatoking]

Just a severe lack of feed. Nutrients can be washed out with over watering, but in hot weather you need a fair bit of water, so a little and offen is the rule. I would feed them everyday for a week.

If they are outside, which it looks like, too much rain can leach out nutrients as well.

Mr TK

[OllieMartin]

It looks specifically like Phosphorus deficiency.
This (as TomatoKing says) can be caused by heavy rainfall leeching nutrients out of the soil, it can also be caused by acid, clay or poor chalky soils and plants also need warmth to take up phosphorus up from the soil, so a sudden cold spell can cause these symptoms temporarily.

Phosphorus deficiency - WikiGardener

(I also pinched your picture for the above page, hope that's okay )

[poppyfield]

Oh thanks everyone that is great news, its my first year growing and I have lots of tomato's so it would have been heart breaking if I couldn't enjoy them. I will make sure I give them a good feed (and some deserved love) for the next week and hopefully this will do the trick.

No worries OllieMartin on using the picture - I feel really pleased that you want to

thanks again everyone.

[Complete Novice]

Looks like potato blight

Please have a look at my photos and confirm the bad news for me.

The potatoes were planted in the first week of May and were supposedly blight-resistant. They're called 'sarpo mira' and were bought from a reputable seller. So, a few questions.....

1) What likely went wrong with this so-called 'blight-resistant'? I didn't water regularly, just depended on the rain, but gave them the occasional soak in hot weather.

2) What do I do now? Will the potatoes be edible? I presume I burn or bin the leaves rather than compost them?

Thanks.

[Shadylane]

I'm not convinced that's blight but I'm not an expert so hopefully someone will come along and confirm that it isn't. If it is you need to cut the stems off asap dispose of/burn. Some spuds may be ok some won't be. Are they an early or main crop? Our earlies all look a bit crap now. Someone with more tatty knowledge will be here to advise you soon

[womble]

It looks like early blight to me, if you have a look at this page, it should give an idea bout what to do.
Sarpo Mira, DIVERSITY WEBSITE, blight proof potato?

If you have blight on potatoes, you need to cut all the haulms down to the ground, then leave the spuds for a couple of weeks, this allows the blight spores to die down on the surface and not get into the tubers when you dig them up.

[Tony D]

Potato & tomato blight or what ?

My potatoes died although the tubers were healthy, small and edible. The stems just yellowed and keeled over.
Two weeks later my tomato plants (mainly the beef variety) developed brown patches on the stems, the leaves dried up, and the fruits went black. What have I done wrong? What should I do with the compost?

[Complete Novice]

It looks like early blight to me, if you have a look at this page, it should give an idea bout what to do.
Sarpo Mira, DIVERSITY WEBSITE, blight proof potato?

If you have blight on potatoes, you need to cut all the haulms down to the ground, then leave the spuds for a couple of weeks, this allows the blight spores to die down on the surface and not get into the tubers when you dig them up.

Hi Womble, that's an interesting link. Seems to suggest that the plants may be salvagable, but is it too late now in the middle of August for me?

Am I right in thinking that the 'halums' are the stems and infected leaves?

So, cut them right down to the ground, wait a few weeks for them to grow new leaves, then harvest? The link seems to suggest to harvest the potatoes anyway, but to move the stems on to some clean compost so that the plant will regenerate. Is that how you read it?

Sorry for all the newb questions

[womble]

Hi Womble, that's an interesting link. Seems to suggest that the plants may be salvagable, but is it too late now in the middle of August for me?

Am I right in thinking that the 'halums' are the stems and infected leaves?

So, cut them right down to the ground, wait a few weeks for them to grow new leaves, then harvest? The link seems to suggest to harvest the potatoes anyway, but to move the stems on to some clean compost so that the plant will regenerate. Is that how you read it?

Sorry for all the newb questions

I think you've got a bit mixed up. Probably I didn't help

There's 2 types of blight, early and late, late is the real killer and will be the one talked about when "blight" is mentioned.
You can see on the photo on that web site, that the potatoes have spots of early blight, yet the article says that the plants are surviving and growing new growth. So leave well alone unless it gets out of control, which it doesn't seem to be.

Your potatoes are resistant to all blight, so may be different from my experiences, but when blight takes a hold on potatoes, usually you cut all of the haulms off (everything above the ground) and leave the tubers (everything under the ground) for 2 weeks ish, this is so any blight spores won't infect the tubers you dig up and store, because if they do you will have a rotting mess.

They don't regrow and you aren't supposed to compost the haulms, (but I do Shhh) you are supposed to burn them or put them to landfill, or greenwaste.

[zazen999]

Hi Womble, that's an interesting link. Seems to suggest that the plants may be salvagable, but is it too late now in the middle of August for me?

Am I right in thinking that the 'halums' are the stems and infected leaves?

So, cut them right down to the ground, wait a few weeks for them to grow new leaves, then harvest? The link seems to suggest to harvest the potatoes anyway, but to move the stems on to some clean compost so that the plant will regenerate. Is that how you read it?

Sorry for all the newb questions

When my sarpo mira's got blight last year, I just left them and they recovered.

Sarpo's are blight resistant, not immune. So, they will show signs but can recover.

If I were you, I'd furtle down and get as many large tubers out now; earth it back up and leave it be. If it gets really bad, then get rid. But you should find that the leaves will regenerate and you may well have healthy leaves growing back in a week or 2.

[zazen999]

My potatoes died although the tubers were healthy, small and edible. The stems just yellowed and keeled over.
Two weeks later my tomato plants (mainly the beef variety) developed brown patches on the stems, the leaves dried up, and the fruits went black. What have I done wrong? What should I do with the compost?

I think you have 2 different things here.

Tomatoes, yes if they have had black patches on the stems and the fruit went black then it's likely to be blight. Dispose of in the brown bin as this will be in a heap big enough to kill the spores. Or burn it.

Potatoes; which type were they, when were they put in the ground and when did this happen?

[green thing]

blight what should you do?

Hi all
I've just been to check on my plot today and I think some of my spuds have blight
all the bottom leaves have gone yellow the top leaves have brown spots on them?
It looks like it's started on some of the seed potatoes them moved along the row
the potatoes from the market we forgot about under the stairs don't seem to have it yet
we have been digging them up as and when we need them
should I dig the lot up now ?
what should I do with the foliage ?
thanks

[sewer rat]

If it is blight you need to stop it getting from the shaws (the stems and foliage) down into the tubers - the only way to do this is to remove the stems by cutting them off just above ground level - these should then be burnt to kill of the fungal spores. If your crop is ready, I would lift the whole lot now, checking each tuber - blighted tubers will have soft pussy areas and smell rank -again these should be burnt, Other tubers can be left to dry before storing in a paper sack - but I would still check them every couple of days. Sorry, I know it's a pain but blight can take a while to show p in tubers - but then again you might be lucky and catch it in time or if you are really lucky, it might no be blight at all - do the brown spots have a white edge on the underside of the leaf ? The yellowing could just be the foliage dieing back naturally.

[green thing]

thanks for the reply

it might no be blight at all - do the brown spots have a white edge on the underside of the leaf ? The yellowing could just be the foliage dieing back naturally.

the spot are just brown can't see any white
the spot just seem to be getting larger
we've just had three fairly cold nights in a row I not sure if this has anything to do with it?
the spuds are small and about the size of an egg but look ok
will have another look today
thanks
rat